基于次用戶分級的PRP M/G/m排隊(duì)論頻譜切換模型

馬彬; 成雙果; 謝顯中

doi:10.11999/JEIT171117

基于次用戶分級的PRP M/G/m排隊(duì)論頻譜切換模型

doi: 10.11999/JEIT171117

基金項(xiàng)目:

國家自然科學(xué)基金(61471076, 61601070)，重慶市基礎(chǔ)與前沿研究計(jì)劃(cstc2015jcyjA40047, cstc2016jcyjA0455)，重慶郵電大學(xué)博士啟動基金(A2015-16)

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- 文章訪問數(shù): 1496
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2017-11-28
- 修回日期: 2018-03-07
- 刊出日期: 2018-08-19

PRP M/G/m Queuing Theory Spectrum Handoff Model Based on Classified Secondary Users

Funds:

The National Natural Science Foundation of China (61471076, 61601070), The Foundation and Advanced Research Program of Chongqing (cstc2015jcyjA40047, cstc2016 jcyjA0455), The Doctoral Start-up Fund of Chongqing University of Posts and Telecommunications (A2015-16)

摘要

摘要: 為滿足次用戶不同時(shí)延需求并提高信道利用率，該文提出一種基于次用戶分級的PRP M/G/m排隊(duì)論頻譜切換模型。首先，根據(jù)次用戶主要業(yè)務(wù)的時(shí)延需求不同，對次用戶進(jìn)行分級評價(jià)，將次用戶分為時(shí)延敏感型和非時(shí)延敏感型用戶，時(shí)延敏感型次用戶具有更高的優(yōu)先級來接入信道。其次，采用PRP M/G/m排隊(duì)論來建立基于用戶分級的頻譜切換模型。同時(shí)推導(dǎo)和分析了該模型下不同優(yōu)先級次用戶擴(kuò)展數(shù)據(jù)傳輸時(shí)間，進(jìn)而提出了面向各級次用戶自適應(yīng)頻譜切換策略。仿真結(jié)果表明，相較于已有頻譜切換策略，該模型能有效降低次用戶切換時(shí)延以及擴(kuò)展數(shù)據(jù)傳輸時(shí)間，保證高優(yōu)先級次用戶的服務(wù)質(zhì)量，提升次用戶頻譜切換的綜合性能。
- 認(rèn)知無線電 /
- 頻譜切換 /
- 排隊(duì)論
Abstract: In order to meet different delay requirements of secondary users and improve the channel utilization, a PRP M/G/m queuing theory spectrum handoff model based on classified secondary user is proposed. Firstly, according to different delay requirements of the main service, secondary users are classified into delay-sensitive and non-delay-sensitive users. The delay-sensitive users have higher priority to access the channel. Secondly, PRP M/G/m queuing theory is adopted to establish the spectrum handoff model. Meanwhile, the extended data delivery time of secondary users with different priorities is deduced and analyzed. Then the adaptive spectrum handoff strategy for secondary users is proposed. Simulation results suggest that the proposed model can reduce the handoff delay and extended data delivery time, which can effectively ensure the QoS of high- priority secondary users and improve the overall performance.
- Cognitive Radio (CR) /
- Spectrum handoff /
- Queuing theory

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參考文獻(xiàn)(16)

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